Adobe Photoshop Lightroom is very similar to Photoshop, except that it is less expensive and, in some regards, easier to use. Yet, the program comes with many of the same features as Photoshop, and it allows users to create a number of effects and modifications to their photographs. One way this is done is via the Lightroom brush tool.
The Adjustment Brush tool allows users to change small parts of a photograph without affecting the rest of it. Basically, you will select a portion of the photograph while leaving the rest unchanged. And, all of these changes take place within the Develop Module.